288 DR. G. J. HINDE. 



been removed. Numerous casts of small corals are distributed through the core, including Pocillopora, 

 Seriatopara, and Madrepwa, surrounded by thick layers of Polytrema planuui, with others not determinable. 

 Milkpora. Alcyonarian spicules, Orbifolites, Gi/psina, AinpJdstegina. Echinid spines. Casts of lamelli- 

 branchs and gastropods. Liihothamnion. Cliona borings. 



(599a, 600a). Total length 274 millims. Speckled greyish-brown, fine-grained, compact to porous 

 dolomite, with occasional hollows. Casts of small corals ; Sfi/lopJiara, Pocillopora, Seriutopora, Madrepora, 

 and undetermined perforate corals. Alcyonarian spicules. Detrital materials, including the same 

 foraminifera and other organisms as in the preceding core, with the addition of Hcfcrostcgma. 



(601a). Length 269 millims. Rock similar to preceding. Casts of small corals belonging to Stylophwa, 

 Seriatopora, Asfrcea and Porites. The larger part of the core consists of foraminifera and fragmentary 

 detritus; Orbitolifes, Polytrema and Amplmicgina. Echinid spines, Serpida-twhes,. Lifhofhainnion. 



(602a). Length 150 millims. Speckled greyish-brown, minutely porous. At the top of the core there 

 is a cast of Stylophora ; with this exception the rock consists of the same foraminifera as in the preceding, 

 with the addition of Gypsina. Echinid spines. Fragments of Litliotliamnion. 



(603a) [814]. Length 205 millims. Rock like preceding. Cast of small A>ifrcea and Millepm-a. 

 Alc\'onarian sjjicules. Core chiefly of foraminifera and fragmental materials. Orhifolifes, Carpentnia, 

 Polytrema planuDt, prominent, Gypsina inliarens, Aviphisfegina and Hcfcro^tcgina. Echinid spines and plates, 

 common and well preserved. Fragments of Lithothaiiinion. Haliinnla. 



(604a, 605a). Total length 256 millims. Rock similar to preceding. Casts of small examples of 

 Stylophwa, Pocillopora and Poritrs. MiUepora. Corals generally surrounded with Polytrema planum, 

 showing the structure distinctly. Larger part of core consists of Orhitolites, Aniphideginu, casts of gastropods, 

 and fragments of Litliothai union. Cliona borings. 



(606a) [815]. Length 252 millims. Greyish-brown, mottled, porous, with occasional hollows. Core 

 largely of corals : Pocillopora, Asfrmi, and a perforate coral, which I have not been alile to determine. 

 Corals encrusted by thick whitish layers of Polytrema planum. Alcyonarian spicules. The foraminifera 

 include Orhitolites, Planorbulina, Curpenteria, Amphistegina, Heterodeginu, as well as the Polytrema mentioned. 

 Echinid spines. Casts of lamellibranchs. Litltothamnian. 



(607a). Length 148 millims. Greyish-brown, minutely porous, with occasional hollows. Stylophora, 

 Pocillopora, Orhicella. Thick layei's of Polytrema /ilannm. Echinid spines. AmpJiistegiva. Lit/iothaiimion. 



Depth from Surface , 1053-1066 /ce/I ; Distance Bored, IS feet ; Total Lengtli. of Core 

 Obtained, 9 feet 9 inches ; JStmihers of Cores, 608a-627a. 



Solid cylindrical cores of greyish, greyish-white to greyish-brown, dolomitic lime- 

 stone ; from about the horizon of 1060 feet there is a less amount of magnesian 

 carbonate in the rock than previously ; as a consequence of this, tlie foraminifera are 

 much better preserved, but the corals continue in the same unfavourable state of 

 preservation ; they have been either partially dissolved away, or they are replaced 

 and infilled with crystalline matrix. The cores are fi-equently cavernous, and the 

 hollows are lined witli concentric layers of crystalline calcite and dolomite. Corals 

 are generally distributed in the rock, but not equally ; in some cores there are only 

 a few small casts, while in others the rock is to a large extent composed of them. 

 They belong to Stylophora, Pocillopora, Seriatopora, Astrsean, genus undetermined, 

 Orbicella, Psammocora, Madrepora, Montipora, and Poritvs. Lobophytnm and 

 detached alcyonarian spicules. Foraminifera are very numerous -and well shown; 



